This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A134596 #23 Jun 16 2021 17:41:30
%S A134596 2,37,137,1379,13679,123479,1234679,12345679,102345679,1123456789,
%T A134596 10123456789
%N A134596 The largest n-digit primeval number A072857.
%C A134596 Former definition: The least n-digit number m (i.e., m >= 10^(n-1)) which yields A076730(n) = the maximum, for m < 10^n, of A039993(m) = number of primes that can be formed using some or all digits of m.
%C A134596 Subsequence of A072857 consisting of the largest terms of given length. - _M. F. Hasler_, Mar 12 2014
%H A134596 M. Keith, <a href="http://www.cadaeic.net/primeval.htm">Integers containing many embedded primes</a>
%F A134596 a(n) = max { m in A072857, m < 10^n }. - _M. F. Hasler_, Mar 12 2014
%o A134596 (PARI) A134596(n,A=A072857)=vecmax(select(t->logint(t,10)+1==n,A)) \\ where A072857 must comprise all n digit terms of that sequence. - _M. F. Hasler_, Oct 14 2019
%o A134596 (Python) # see linked program in A076449
%Y A134596 Cf. A039993, A072857, A076730, A134597, A076449.
%K A134596 nonn,base,more
%O A134596 1,1
%A A134596 _N. J. A. Sloane_, Jan 25 2008
%E A134596 Link fixed by _Charles R Greathouse IV_, Aug 13 2009
%E A134596 Definition reworded and values of a(6)-a(11) added by _M. F. Hasler_, Mar 11 2014